About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Materials Science
|
| Presentation Title |
Examination of Oxygen Evolution Anodes for Low-Temperature Hematite Electrowinning in Alkaline Conditions |
| Author(s) |
Scott Joseph Reynertson, Kannan Ramaiyan, Dev Chidambaram |
| On-Site Speaker (Planned) |
Scott Joseph Reynertson |
| Abstract Scope |
Low-temperature alkaline electrowinning of iron ore is a promising approach for producing zerovalent iron from aqueous solutions. Unlike traditional blast furnace routes, this process relies on electricity rather than coke combustion, which enables rapid buildout using modular low-cost electrochemical cells. Electrowinning is carried out in a two-electrode cell, where iron species are reduced from the solution and deposited onto the cathode. During operation, hydrogen evolution at the cathode increases overpotential, while oxygen evolution at the anode further contributes to energy losses. These parasitic reactions can significantly impact overall efficiency. In this talk, the effects of anode catalyst material and surface area on cell performance are examined under alkaline electrowinning conditions. Understanding how anode properties influence overpotential and reaction kinetics provides insight into lowering operational voltage, allowing scalability to become a more viable pathway.
This work was supported by Advanced Research Projects Agency - Energy (ARPA-e) under award DE-AR0001906. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electrometallurgy, Iron and Steel, Other |